Move dct and rdft definitions to separate files

This leaves fft.h with only the core FFT and MDCT definitions
thus making it more managable.

Signed-off-by: Mans Rullgard <mans@mansr.com>

13 files changed, 138 insertions, 72 deletions

diff --git a/libavcodec/arm/fft_init_arm.c b/libavcodec/arm/fft_init_arm.c
index f898e1ab42..4ee4909682 100644
--- a/libavcodec/arm/fft_init_arm.c
+++ b/libavcodec/arm/fft_init_arm.c
@@ -19,6 +19,7 @@
  */
 
 #include "libavcodec/fft.h"
+#include "libavcodec/rdft.h"
 #include "libavcodec/synth_filter.h"
 
 void ff_fft_permute_neon(FFTContext *s, FFTComplex *z);
diff --git a/libavcodec/avfft.c b/libavcodec/avfft.c
index 1e52fe67b1..9ed06fbeb5 100644
--- a/libavcodec/avfft.c
+++ b/libavcodec/avfft.c
@@ -19,6 +19,8 @@
 #include "libavutil/mem.h"
 #include "avfft.h"
 #include "fft.h"
+#include "rdft.h"
+#include "dct.h"
 
 /* FFT */
 
diff --git a/libavcodec/binkaudio.c b/libavcodec/binkaudio.c
index ec1d0233c6..77ce6b9d3a 100644
--- a/libavcodec/binkaudio.c
+++ b/libavcodec/binkaudio.c
@@ -32,7 +32,8 @@
 #define ALT_BITSTREAM_READER_LE
 #include "get_bits.h"
 #include "dsputil.h"
-#include "fft.h"
+#include "dct.h"
+#include "rdft.h"
 #include "fmtconvert.h"
 #include "libavutil/intfloat_readwrite.h"
 
diff --git a/libavcodec/costablegen.c b/libavcodec/costablegen.c
index 20321ef661..33afd8de2d 100644
--- a/libavcodec/costablegen.c
+++ b/libavcodec/costablegen.c
@@ -37,7 +37,7 @@ int main(int argc, char *argv[])
     double (*func)(double) = do_sin ? sin : cos;
 
     printf("/* This file was generated by libavcodec/costablegen */\n");
-    printf("#include \"libavcodec/fft.h\"\n");
+    printf("#include \"libavcodec/%s\"\n", do_sin ? "rdft.h" : "fft.h");
     for (i = 4; i <= BITS; i++) {
         int m = 1 << i;
         double freq = 2*M_PI/m;
diff --git a/libavcodec/dct.c b/libavcodec/dct.c
index 6bafdc1136..ef9673e227 100644
--- a/libavcodec/dct.c
+++ b/libavcodec/dct.c
@@ -29,7 +29,7 @@
 
 #include <math.h>
 #include "libavutil/mathematics.h"
-#include "fft.h"
+#include "dct.h"
 #include "x86/fft.h"
 
 #define DCT32_FLOAT
diff --git a/libavcodec/dct.h b/libavcodec/dct.h
new file mode 100644
index 0000000000..141518d250
--- /dev/null
+++ b/libavcodec/dct.h
@@ -0,0 +1,50 @@
+/*
+ * (I)DCT Transforms
+ * Copyright (c) 2009 Peter Ross <pross@xvid.org>
+ * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
+ * Copyright (c) 2010 Vitor Sessak
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef AVCODEC_DCT_H
+#define AVCODEC_DCT_H
+
+#include "rdft.h"
+
+struct DCTContext {
+    int nbits;
+    int inverse;
+    RDFTContext rdft;
+    const float *costab;
+    FFTSample *csc2;
+    void (*dct_calc)(struct DCTContext *s, FFTSample *data);
+    void (*dct32)(FFTSample *out, const FFTSample *in);
+};
+
+/**
+ * Set up DCT.
+ * @param nbits           size of the input array:
+ *                        (1 << nbits)     for DCT-II, DCT-III and DST-I
+ *                        (1 << nbits) + 1 for DCT-I
+ *
+ * @note the first element of the input of DST-I is ignored
+ */
+int  ff_dct_init(DCTContext *s, int nbits, enum DCTTransformType type);
+void ff_dct_end (DCTContext *s);
+
+#endif
diff --git a/libavcodec/fft-test.c b/libavcodec/fft-test.c
index bd95e2cd08..acfc5631ce 100644
--- a/libavcodec/fft-test.c
+++ b/libavcodec/fft-test.c
@@ -27,6 +27,8 @@
 #include "libavutil/lfg.h"
 #include "libavutil/log.h"
 #include "fft.h"
+#include "dct.h"
+#include "rdft.h"
 #include <math.h>
 #include <unistd.h>
 #include <sys/time.h>
diff --git a/libavcodec/fft.h b/libavcodec/fft.h
index f10ef89621..a7ba00fe1a 100644
--- a/libavcodec/fft.h
+++ b/libavcodec/fft.h
@@ -61,16 +61,12 @@ struct FFTContext {
 
 #if CONFIG_HARDCODED_TABLES
 #define COSTABLE_CONST const
-#define SINTABLE_CONST const
 #else
 #define COSTABLE_CONST
-#define SINTABLE_CONST
 #endif
 
 #define COSTABLE(size) \
     COSTABLE_CONST DECLARE_ALIGNED(16, FFTSample, ff_cos_##size)[size/2]
-#define SINTABLE(size) \
-    SINTABLE_CONST DECLARE_ALIGNED(16, FFTSample, ff_sin_##size)[size/2]
 
 extern COSTABLE(16);
 extern COSTABLE(32);
@@ -93,20 +89,6 @@ extern COSTABLE_CONST FFTSample* const ff_cos_tabs[17];
  */
 void ff_init_ff_cos_tabs(int index);
 
-extern SINTABLE(16);
-extern SINTABLE(32);
-extern SINTABLE(64);
-extern SINTABLE(128);
-extern SINTABLE(256);
-extern SINTABLE(512);
-extern SINTABLE(1024);
-extern SINTABLE(2048);
-extern SINTABLE(4096);
-extern SINTABLE(8192);
-extern SINTABLE(16384);
-extern SINTABLE(32768);
-extern SINTABLE(65536);
-
 /**
  * Set up a complex FFT.
  * @param nbits           log2 of the length of the input array
@@ -127,51 +109,4 @@ void ff_imdct_half_c(FFTContext *s, FFTSample *output, const FFTSample *input);
 void ff_mdct_calc_c(FFTContext *s, FFTSample *output, const FFTSample *input);
 void ff_mdct_end(FFTContext *s);
 
-/* Real Discrete Fourier Transform */
-
-struct RDFTContext {
-    int nbits;
-    int inverse;
-    int sign_convention;
-
-    /* pre/post rotation tables */
-    const FFTSample *tcos;
-    SINTABLE_CONST FFTSample *tsin;
-    FFTContext fft;
-    void (*rdft_calc)(struct RDFTContext *s, FFTSample *z);
-};
-
-/**
- * Set up a real FFT.
- * @param nbits           log2 of the length of the input array
- * @param trans           the type of transform
- */
-int ff_rdft_init(RDFTContext *s, int nbits, enum RDFTransformType trans);
-void ff_rdft_end(RDFTContext *s);
-
-void ff_rdft_init_arm(RDFTContext *s);
-
-/* Discrete Cosine Transform */
-
-struct DCTContext {
-    int nbits;
-    int inverse;
-    RDFTContext rdft;
-    const float *costab;
-    FFTSample *csc2;
-    void (*dct_calc)(struct DCTContext *s, FFTSample *data);
-    void (*dct32)(FFTSample *out, const FFTSample *in);
-};
-
-/**
- * Set up DCT.
- * @param nbits           size of the input array:
- *                        (1 << nbits)     for DCT-II, DCT-III and DST-I
- *                        (1 << nbits) + 1 for DCT-I
- *
- * @note the first element of the input of DST-I is ignored
- */
-int  ff_dct_init(DCTContext *s, int nbits, enum DCTTransformType type);
-void ff_dct_end (DCTContext *s);
-
 #endif /* AVCODEC_FFT_H */
diff --git a/libavcodec/mpegaudio.h b/libavcodec/mpegaudio.h
index 6b623fc909..fbfddcc5d2 100644
--- a/libavcodec/mpegaudio.h
+++ b/libavcodec/mpegaudio.h
@@ -33,7 +33,7 @@
 #include "avcodec.h"
 #include "get_bits.h"
 #include "dsputil.h"
-#include "fft.h"
+#include "dct.h"
 
 #define CONFIG_AUDIO_NONSHORT 0
 
diff --git a/libavcodec/rdft.c b/libavcodec/rdft.c
index 23ce524dcd..116cfa4366 100644
--- a/libavcodec/rdft.c
+++ b/libavcodec/rdft.c
@@ -21,7 +21,7 @@
 #include <stdlib.h>
 #include <math.h>
 #include "libavutil/mathematics.h"
-#include "fft.h"
+#include "rdft.h"
 
 /**
  * @file
diff --git a/libavcodec/rdft.h b/libavcodec/rdft.h
new file mode 100644
index 0000000000..7572c6c76d
--- /dev/null
+++ b/libavcodec/rdft.h
@@ -0,0 +1,74 @@
+/*
+ * (I)RDFT transforms
+ * Copyright (c) 2009 Alex Converse <alex dot converse at gmail dot com>
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_RDFT_H
+#define AVCODEC_RDFT_H
+
+#include "config.h"
+#include "fft.h"
+
+#if CONFIG_HARDCODED_TABLES
+#   define SINTABLE_CONST const
+#else
+#   define SINTABLE_CONST
+#endif
+
+#define SINTABLE(size) \
+    SINTABLE_CONST DECLARE_ALIGNED(16, FFTSample, ff_sin_##size)[size/2]
+
+extern SINTABLE(16);
+extern SINTABLE(32);
+extern SINTABLE(64);
+extern SINTABLE(128);
+extern SINTABLE(256);
+extern SINTABLE(512);
+extern SINTABLE(1024);
+extern SINTABLE(2048);
+extern SINTABLE(4096);
+extern SINTABLE(8192);
+extern SINTABLE(16384);
+extern SINTABLE(32768);
+extern SINTABLE(65536);
+
+struct RDFTContext {
+    int nbits;
+    int inverse;
+    int sign_convention;
+
+    /* pre/post rotation tables */
+    const FFTSample *tcos;
+    SINTABLE_CONST FFTSample *tsin;
+    FFTContext fft;
+    void (*rdft_calc)(struct RDFTContext *s, FFTSample *z);
+};
+
+/**
+ * Set up a real FFT.
+ * @param nbits           log2 of the length of the input array
+ * @param trans           the type of transform
+ */
+int ff_rdft_init(RDFTContext *s, int nbits, enum RDFTransformType trans);
+void ff_rdft_end(RDFTContext *s);
+
+void ff_rdft_init_arm(RDFTContext *s);
+
+
+#endif
diff --git a/libavcodec/wmavoice.c b/libavcodec/wmavoice.c
index c1aa9757c5..ea8260c482 100644
--- a/libavcodec/wmavoice.c
+++ b/libavcodec/wmavoice.c
@@ -36,8 +36,8 @@
 #include "acelp_filters.h"
 #include "lsp.h"
 #include "libavutil/lzo.h"
-#include "avfft.h"
-#include "fft.h"
+#include "dct.h"
+#include "rdft.h"
 #include "sinewin.h"
 
 #define MAX_BLOCKS           8   ///< maximum number of blocks per frame
diff --git a/libavcodec/x86/fft.c b/libavcodec/x86/fft.c
index 2a6e9f909f..2426a3df0f 100644
--- a/libavcodec/x86/fft.c
+++ b/libavcodec/x86/fft.c
@@ -18,6 +18,7 @@
 
 #include "libavutil/cpu.h"
 #include "libavcodec/dsputil.h"
+#include "libavcodec/dct.h"
 #include "fft.h"
 
 av_cold void ff_fft_init_mmx(FFTContext *s)